Fullstack Software Engineer (Claude Code)

As a Full-Stack Engineer, you will work closely with product managers, architects, and engineers to evolve the MarTech platform — from backend APIs to polished frontend experiences.

You will also be expected to leverage AI tools (e.g., Claude Code) intentionally and skillfully — as a force multiplier, not a crutch.

Responsibilities

• Engineer backend systems and RESTful APIs using Node.js (Express).
• Build responsive, performant frontend interfaces using React + TypeScript.
• Design and implement PostgreSQL schemas that support complex product requirements.
• Write clean, testable, well-documented code, and help hold that standard across the team.
• Use AI tools to accelerate development, debug, and solve architecture problems — while validating outputs.
• Analyze, propose, and deploy relevant technologies to meet product requirements.
• Collaborate across teams with clear technical communication in English.

Requirements

Must-have

• Ability to effectively use Claude Code for software development and testing
• Solid experience with Node.js and one of Express / Fastify / Hono.
• Proficiency in React with TypeScript (hooks, state management, component design).
• Strong understanding of PostgreSQL (schema design, indexing, query optimization).
• Familiarity with REST API design and HTTP fundamentals.
• Understanding of authentication patterns (JWT, sessions, OAuth basics).
• Strong advocate of code quality, testing, and craftsmanship.
• Communicates clearly in English.

Nice-to-have

• Experience with AI ecosystem and tools, like OpenClaw, MCP, …
• Experience with Redis (caching, pub/sub, rate limiting).
• Familiarity with Docker and containerized local dev environments.
• Exposure to queue systems (BullMQ, RabbitMQ, SQS).
• Experience with frontend data fetching patterns (React Query, SWR).
• Knowledge of CI/CD pipelines.

Mindset (non-negotiable)

• You take ownership.
• You use AI tools intentionally and skillfully and truly understand the code that AI writes.
• You care about the user experience, not just making the test pass.
• Newbies are welcome if they can complete the code challenge.

What we evaluate

• Backend correctness and business rules
• API design (conventions, error handling)
• Frontend quality (UX, loading/error states, component structure)
• Code quality (readability, separation of concerns)
• AI collaboration (judgment, transparency)
• Testing (meaningful coverage and rationale)